using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace tlang
{
    internal class MemberFunctionCallNode : FunctionCallNode
    {
        public Node Parent {get;set;}



        public MemberFunctionCallNode(Node parent, string name, List<Node> args) : base(name,args)
        {
            Parent = parent;
            
        }
        public override TObject Execute(IScopeEnvironment nodeEnv)
        {
           
            
            var res=Parent.Execute(nodeEnv);

            var dict = res as TDictionary;
            var integer = res as TNumber;
            var str = res as TString;
            var chr = res as TChar;
            var array = res as TArray;
            var myBool = res as TBoolean;

             if(Text == "toChar2")
            {
                throw new Exception(res.GetType().Name);  
            }
            if(dict != null)
            {
                var n = dict[Text] as ICallable;
                if(n != null)
                {
                    return n.Call(Args.Select<Node,TObject>(e=>e.Execute(nodeEnv)).ToArray());
                }
            }else if(myBool != null)
            {
                //branch
                
                if(Text == "toChar")
                {
                    return TObject.Char(myBool.Value ? 'y' : 'n');
                }
                if(Text == "toNumber")
                {
                    return TObject.Number(myBool.Value ? 1 : 0);
                }
            }
            else if(chr != null)
            {
                if(Text == "toUpper")
                {
                    return TObject.Char(char.ToUpper(chr.Value));
                }
                if(Text == "toLower")
                {
                    return TObject.Char(char.ToLower(chr.Value));
                }
                
                if(Text == "toNumber")
                {
                    return TObject.Number(chr.Value);
                }
            }
            else if(array != null)
            {
                if(Text == "add")
                {
                    if(Args.Count == 1)
                    {
                        TObject obj = Args[0].Execute(nodeEnv);
                        array.Items.Add(obj);
                        return res;
                    }
                }
                if(Text == "remove")
                {
                    if(Args.Count == 1)
                    {
                        TObject obj = Args[0].Execute(nodeEnv);
                        array.Items.Remove(obj);
                        return res;
                    }
                }
                if(Text == "at")
                {
                    //at(index)
                    if(Args.Count == 1)
                    {
                        var index=Args[0].Execute(nodeEnv) as TNumber;
                        if(index != null)
                        {
                            if(index.Value < array.Items.Count)
                            return array.Items[(int)index.Value];
                        }
                    }
                }
                if(Text == "setAt")
                {
                    TObject value = TObject.Null;

                    //setAt(index,value)
                    //setAt(index) //null
                    if(Args.Count == 2)
                    {
                        value=Args[1].Execute(nodeEnv);
                    }
                    if(Args.Count > 0)
                    {
                        var index=Args[0].Execute(nodeEnv) as TNumber;
                        if(index != null)
                        {
                            if(index.Value < array.Items.Count)
                            array.Items[(int)index.Value]=value;
                        }
                    }
                    return value;
                }
                
            }
            else if(integer != null)
            {
                if(Text == "int")
                {
                    return TObject.Number(Math.Round(integer.Value));
                }
                if(Text == "abs")
                {
                    return TObject.Number(Math.Abs(integer.Value));
                }
                if(Text == "toChar")
                {
                    
                    return TObject.Char((char)integer.Value);
                }
            }else if(str != null)
            {
                if(Text == "toArray")
                {
                    var _array=TObject.Array();
                    foreach(var c in str.Value)
                    {
                        _array.Items.Add(TObject.Char(c));
                    }
                }
                 if(Text == "replace")
                {
                    //todo fill this method out
                    if(Args.Count >= 2)
                    return TObject.String(str.Value.Replace(Args[0].Execute(nodeEnv).ToString(),Args[1].Execute(nodeEnv).ToString()));
                }
                if(Text == "split")
                {
                    if(Args.Count >= 1)
                    {
                       var text= str.Value;
                       var splitOn = Args[0].Execute(nodeEnv).ToString();
                       int count = int.MaxValue;
                       bool splitOp = false;
                       if(Args.Count >= 2)
                       {
                            splitOp = Args[1].Execute(nodeEnv).AsBoolean;
                       }
                       if(Args.Count >= 3)
                       {
                            var n = Args[2].Execute(nodeEnv) as TNumber;
                            if(n != null) count = (int)n.Value;
                       }
                       
                       var array1=TObject.Array();
                       
                       array1.Items.AddRange(text.Split(new string[]{splitOn},count,splitOp ? StringSplitOptions.RemoveEmptyEntries : StringSplitOptions.None).Select<string,TString>(e=>TObject.String(e)));
                       return array1;
                    }
                    //todo fill this method out
                    //str.Value.Split(,,StringSplitOptions.TrimEntries);
                }
                if(Text == "startsWith")
                {
                    string val = " ";
                    if(Args.Count > 0){
                    val = Args[0].Execute(nodeEnv).ToString();
                    
                    }
                    

                    
                    return TObject.Boolean(str.Value.StartsWith(val));
                    
                }
                if(Text == "endsWith")
                {
                    string val = " ";
                    if(Args.Count > 0){
                    val = Args[0].Execute(nodeEnv).ToString();
                    
                    }
                    

                    
                    return TObject.Boolean(str.Value.EndsWith(val));
                    
                }
                if(Text == "trimStart")
                {
                    if(Args.Count  == 0)
                    {
                        return TObject.String(str.Value.TrimStart());
                    }else{
                        
                        return TObject.String(str.Value.TrimStart(Args.Select<Node,char>(n=>{
                            var nV=n.Execute(nodeEnv) as TChar;
                            if(nV != null)
                            {
                                return nV.Value;
                            }
                            return ' ';
                        }).ToArray()));
                    }
                }
                if(Text == "trimEnd")
                {
                    //trimend()
                    if(Args.Count  == 0)
                    {
                        return TObject.String(str.Value.TrimEnd());
                    }else{
                        
                        return TObject.String(str.Value.TrimEnd(Args.Select<Node,char>(n=>{
                            var nV=n.Execute(nodeEnv) as TChar;
                            if(nV != null)
                            {
                                return nV.Value;
                            }
                            return ' ';
                        }).ToArray()));
                    }
                }
                

            }
            
            if(dict == null)
            {
                if(Text == "toString")
                {
                    return TObject.String(res.ToString());
                }
                if(Text == "toBool")
                {
                    return TObject.Boolean(res.AsBoolean);
                }
            }
            if(Text == "toString") return TObject.String("");
            
            return TObject.Uninit;
        }
        
       
    }

    
}